Safety Sub is the industry’s first device that adheres with RP 673rd edition guidelines. It is available in a dual polarity and a negative polarity only variant. Fully semiconductor based and compatible with Control Fire addressable switch, Spartek PX-1 & OM-1, Halliburton JRC Red Det, CoreLab (Guardian) Green Det, SFS & Go FIRE, Schlumberger ASFS and Intellegre’s IntellePerf™ line of products. Fully semiconductor based with no electro-mechanical parts but operates like one.